Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 7ebe54041c04f938cf58fdec9e120347e64c543a
  - Fixed tests on PreCheck class

    Replaced console printing with assertions
    Added branch coverage to clear Sonar major warning
    Increased line coverage to 100%

    Issue-ID: APPC-1499
    Change-Id: Ia027b9d7f414789816d80e12543d27a0baeed9c1
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 76c431f..7ebe540 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 76c431ff25d09b69ea912f53ca96cbcdcb52a3fb
+Subproject commit 7ebe54041c04f938cf58fdec9e120347e64c543a